请教一道GWD逻辑题，谢谢 - ChaseDream

•2. GWD17-Q9: （CD-9 Q10）

•Press Secretary: Our critics claim that the President’s recent highway project cancellations demonstrate a vindictive desire to punish legislative districts controlled by opposition parties. They offer as evidence the fact that 90 percent of the projects canceled were in such districts. But all of the canceled projects had been identified as wasteful in a report written by respected nonpartisan auditors. So the President’s choice was clearly motivated by sound budgetary policy, not partisan politics.

•Which of the following is an assumption on which the press secretary’s argument depends? （B)

A.Canceling highway projects was not the only way for the President to punish legislative districts controlled by opposition parties.

B.The scheduled highway projects identified as wasteful in the report were not mostly projects in districts controlled by the President’s party.

C.The number of projects canceled was a significant proportion of all the highway projects that were to be undertaken by the government in the near future.

D.The highway projects canceled in districts controlled by the President’s party were not generally more expensive than the projects canceled in districts controlled by opposition parties.

E.Reports by nonpartisan auditors are not generally regarded by the opposition parties as a source of objective assessments of government projects.

就是那个report中,被认为是wasteful的计划中,有多少是反对党区的,有多少是总统区的

如果, 所有wasteful的计划中,假设100个, 40个是反对党区的, 60个是总统区的

但是被cancel的计划中90%是反对党区的,那么虽然被cancel的都是wasteful

但是没有cancel的计划中,同样也是wasteful的,就大部分都是总统区的,

那么总统的决定就是明显的党派偏见, 在cancel那些wasteful的计划时,大部分都去选择反对党的cancel.

所有被认为是wasteful的计划中,在总统区的,不是大多数..那么就可以加上条件1和条件2, 推出结论

A、C是无关选项，D中high way projects和other projects谁更expensive题干中也并没提到，E中nonpartisan auditor's reports are not regarded by the opposition parties从题干中也不能推出（因为题干并没说opposition parties对nonpartisan audior的观点如何评价，nonpartisan auditor's reports只是用作一个例子证明president的决定的公正性）

题中先说president's cancellations是一个vindicative desire，并证明the fact that 90 percent of the projects canceled were in such districts.就证明被cancel掉的projects是在opposition parties的districts中，而不是在president's party的districts中，也就是B选项